9 books • 3 series
Population Changes of Certain Opportunistic Bird Species in the United Kingdom Between 1985 and 1994
Statistical Analysis of an Indicator of Population Trends in Farmland Birds (BTO Research Reports, v. 251)
Evaluation of Land Use Bias in Covered Versus Not Covered Breeding Bird Survey Squares (BTO Research Reports)
Habitat Bias in Actual and Ideal Transect Lines in Breeding Bird Surveys (BTO Research Reports)
Breeding Bird Survey (BTO Report, #1) (BTO Research Reports, #225) (BTO Research Reports, #225)